Cystectomy Humans Procedures and Techniques Utilization/*statistics & numerical data Prospective Studies Retrospective Studies Risk Assessment Urinary Bladder Neoplasms/*surgery Predictors Radical cystectomy Use Utilization interest including specific financial interests and relationships and affiliations relevant to the subject matter or materials discussed in the manuscript (eg employment/affiliation grants or funding consultancies honoraria stock ownership or options expert testimony royalties or patents filed received or pending) are the following: None.